Dumping-car.



S. KETGHUM.

DUMPING CAR.

APPLICATION FILED MAR. 4, 190B.

Patented. Jan. 12, 1909.

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SAMUEL KETCHUM, OF HOBOKEN, NEW J ERSEY, ASSIG NOR TO M. H. TREADWELL COMPANY, A CORPORATION OF NEW YORK.

DUMPING-GAR.

Specification of Letters Patent.

Patented Jan. 12,1909.

Application filed March 4:, 1908. Serial No. 419,085.

To all whom it may concern:

Be it known that I, SAMUEL KETCHUM, a citizen of the United States, residing at Hoboken, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Dumping-Oars, of which the iollowing is a full, clear, and exact specification.

This invention relates to dum ing cars, and has particular reference to cin er cars or the like wherein a tilting and bodily movable car body is mounted to be dumped in opposite directions from a central upright position, as may be desired.

More particularly, the invention comprises a power actuated dumping car having an actuating cylinder an piston and has es ecial reference to the provision of means wliereb the momentum of the car body at the en of the outward stroke is automatically opposed by the actuating pressure, whereby the movement is checked without straining the apparatus.

A articular object of the invention is to provide means controlled by the movement of the motor whereby the actuating pressure may be admitted to check the movement at any predetermined portion of the stroke, and thus permit the total checking pressure at the end of the stroke to exceed the actuating pressure to any desired extent. 7

As herein exemplified, the invention is carried out by connections between the motor cylinder and an automatic valve having actuating connection with the movable part of the motor such that the valve is capable of manual actuation to start the movement by admitting pressure on one side of the piston and is automatically actuated by the movement of the motor at a predetermined point to admit pressure to the other side of the piston for the pur ose of checking the movement of the car b0 y at the end.

The invention will bemore fully understood in connection with the description of the accompanying drawings, wherein Figure 1 represents an end view of a dump car embodying the invention, and Fig. 2 is a detail view on an enlarged scale showing the connections between the motor and the automatic controlling valve.

The car frame comprises the usual under frame carried by end bolsters 1, the underframe not being herein shown, and is supable cylinder 9 having ported at the ends on trucks, which will not be particularly described herein, as these may be arran ed accordmg to particular necessities. T e bolsters 1 each have a stationary rack 2 and a track 3, and the car body 4 is preferably secured to a bail 5 which is provided with trunnions 6 at diametrical points. 'Rigidly secured to the trunnions 6 are gears 7 adapted to mesh with the racks 2 (at each end of the car body) and rollers 8 which roll on the tracks 3, the parts thus far described being of a well known construction.

In order to actuate the car body; a mova fixed piston 10 and a hollow piston rod 11 is provided, the cylinder having a box at each end and a removable key 12 which may be used to fasten the trunnion box 13 at each end of the cylinder according to the side on which the car body is to be dumped. The cylinder 9 slides on guides 14 carried by the end bolsters 1, and uid pressure is supplied to one or the other side of the piston t rough the hollow piston rod .11 by pipes 15, 16. The pipes 15, 16 are connected with the valve 0 hnder 17, which latter is also connected'wit a source of supply 18 and an exhaust 19. Mounted withln the valve casing 17 is a double piston 20 carried by an actuating rod 21 the istons being A so spaced as to simultaneously 0 ose' the pipes 15, 16 when the carbody'is at rest; the piston 20 is thrown so as to connect the pipes 18 and 15 pressure will be admitted to theright side of piston 10 through thehollow piston rod, and the cylinder 9 will move'to the right, carrying the car body with i in case t e parts are in the position shown in Fig. 1. When the valve rod 21 is thrown to the left in Fig. 2, the pressure will be admitted on the eft side 0 the fixed piston 10, which would throw the carbody outward to the left in case the cylinder 9 was positioned at the other end of its stroke, by. unlockin the connection between the cylinder an trunnion by means of the key 12. It should be understood that in .both cases, when the su ply is open to one side of the piston, the ot er side is open'to the exhaust. 1 In order to actuate, the piston rod 21, a hand lever-22 and ratchet se ment 23 with a latch 24 is provided, and the ever 22 is connected with the piston rod 21 through a link 25, which latter is pivoted to a link 26. The

8 5 When ing side of the cylinder.

this cut-ofi occurs will be determined by the i link 26 is itself attached to the moving part of the motor, in this case the cylinder 9 by another link 27.

' In order to tilt the car body to the right,

'the lever 22 will be thrown to the right, which will throw the valve 20 in the same direction so as to connect pipes 18 and 15 and 16 and 19, admittin pressure on the right of piston 10 and startlng the car body. The ratchet 23 enables the lever 22 to be set at any desired position, for a urpose which will now be ex lained. As t e cylinder 9 moves to the right, it will commence to throw the valve 20 to the left, cuttin off the connection between pi cs 18 'an 15, and conse quently the-supp y pressure from the actuat- The point at which extent to which the lever 22 was thrown so that by this means an automatic cut-0d is.

provided which can be graduated to take place at any desired portion of the stroke. The movement of the car body does not cease upon the cutting oflt' of the pressure, and it will continue moving by its own momentum, and the object of this invention is to utilize this further movement due to the momentum of the car body to admit actuatingpressure to the other side of the motor piston and thus check the car body b means of the actuating pressure. This wil be accom lished by the continued movement of the automatic valve 20'as the car body moves so that after the connection between pipes 18 and 15 is cut oii, further movement will make a connection between pipes 18 andf16, thus admitting the pressure to the exhaust side to check t e movement, and opening the other side of the iston 10 to the exhaust through ipes 15 an 19.

It will be seen that t e movement of the valve 20 will be proportional to the movement of the motor whlle the motor is moving, but that the valve 20 can be manually operated independently of the motor to an extent varying according to the point at which the cut-01f of actuating pressure and the admission of checking pressure is to take place.

In order to maintain a checking pressure higher than the actuating pressure, the passage of checking pressure back through pipes 16 and 18 is prevented by an automatic valve 29 located in pipe 18, which valve opens to admit pressure, such as steam or am, but closes when the cylinder pressure exceeds the supply ressure. It is thus possible to secure a c ecking pressure much in excess of actuating pressure'by' means entirely automatic after the lever 22 has once been set and latched. Also, it will be seen that the checking pressure will depend upon the time of cut-oii, as the sooner the checkmg pressure is admitted the greater volume of fluid there will be to be compressed by the are disconnected by removing the key, for

the urpose of reversing the operation of the car ody from one side to the other, that the automatic valve will act in the same manner,

but under such'circum'stances the position ing of it will be somewhat different than for tilting a loaded car body. In practice, the operator will very quickly learn the proper positions of the lever 22 for the various conditions of operation.

Modifications and changes in the specific apparatus herein described may be made without departing from the scope of the invention.

Havin thus described my invention, I declare t at what I claim as new and desire to secure by Letters Patent, is

1. In a dumping car, the combination with a dumping car body, and a fluid pressure actuating motor, of means for supplying power to start the motor, means for cuttin ofl the ower after the motor has starte means or applying power tending to reverse the motor, and means for confining the reversing power to secure a high 4 checking pressure,

j 2. In a dumping car, the combination with a dumping car body, and an actuating motor, of manually controlled means for supplying power to start the motor, means for automatically cutting ofi the power after the motor has started, and means for automatically supplying power. tending to reverse the motor.

3. In a dumping car, the combination with a dumping car body, and an actuating motor,v of manually controlled mean's for supplying power to start the motor, and means actuated by the motor for automatically cutting ofl" the power after the motor has starte 4. In a dumping car, the combination with a dumping car body, and an actuating motor, of manually controlled means for supplying power to start the motor, means for automatically cutting oif the power after the motor has started, and means whereby the time of cutting off the power can be varied.

5. In a dumping car, the combination with a dumping car body, and an actuating cylinder and piston, of a controlling valve, means for manually o erating the valve to start the motor, an connections between the valve and a moving art of the motor whereby to reverse the va 6. In a dumping'car, the combination with a dumping car body, and an actuating cylinder an piston, of manually controlled means for supplying power .to start the motor, and cutting off the power after the motor has started and applying power in the reverse direction.

7. In a dumping car, the combination with a dumping car body, and an actuating motor, of manually controlled means for supplying power to start the motor, means for automatically cutting off the power after the motor has started, means for automatically supplying power tending to reverse the motor, and means whereby the reversing power is automatically out off.

8. In a dumping car, the combination with a dumping car body, and an actuating cylinder and piston, of manually controlled means for supplying pressure to start the motor, means for automatically cutting ofi the ressure after the motor has started and app ying pressure in the reverse direction, and means for confinin the reversing pressure so applied whereby to secure checking pressure above actuating pressure.

9. In a dumping car, the combination with an actuating motor, of means for manually admitting power to start the motor, and means actuated by the motor for applying ve to cut ofi the power alter the motor has started.

power to check the motor and timed to act according to the position in which said starting means is set.

10. In a dumping car, the combination with an actuating cylinder and piston, of a controllin valve for admitting fluid pressure to start tIie motor in either direction, and connections between said motor and said valve whereby the latter is automatically closed by the movement of the motor.

11. In a dumping car, the combination with an actuating cylinder and piston, of a controlling valve for admitting fluid pressure to start the motor in either direction, and connections between said motor and said valve whereby the latter is automatically closed by the movement of the motor and opened on the reverse side.

12. In a dumping car, the combination with an actuating cylinder and piston, of a controllin valve for admitting fluid pressure to start t e motor in either direction, and

connections between said motor and said valve whereby the latter is automatically closed by the movement of the motor and opened on the reverse side, and means independent of said valve for confining the-pressure on said other side to check the movement by the compression of such pressure.

In testimony whereof I aflix my signature, in presence of two witnesses.

SAMUEL KETCHUM.

Witnesses ALBERT GRIEB, GEO. A. HOFFMAN. 

